Though public health officials say the vaccines currently remain effective against this strain of the virus, Delta's rapid spread has prompted a rethinking of plans to ease restrictions and a ...

Read more. A top U.S. official suggested people who received the Johnson & Johnson vaccine likely are protected against the delta variant. U.S. Surgeon General Dr. Vivek Murthy told CNBC data ...

Prior COVID-19 vaccination did not stop the immune system from mounting a protective response to the Delta and Omicron ...

Prior COVID-19 vaccination did not stop the immune system from mounting a protective response to the Delta and Omicron strains, though new mutation-specific antibody production dipped slightly, ...

A University of Arizona-led study published in Nature Immunology has found that prior covid-19 vaccination did not block the ...

Covid-19 cases have surged across Asia with new Omicron sub-lineages causing mild symptoms. Despite viral mutations, vaccination continues to offer strong protection against severe illness, say ...

Prior COVID-19 vaccination did not stop the immune system from mounting a protective response to the Delta and Omicron ...

The announcement reverses previous CDC advice. At the time of the announcement, the CDC’s webpage still contained its previous recommendation that everyone ages six months and older get vaccinated, ...

When it comes to getting the most out of a vaccine, arm consistency can make a difference. Some studies suggest that getting a booster in the same arm as the initial shot can boost the immune system’s ...